C++/Qt/QFtp
QFtp base ftp window
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#ifndef FTPWINDOW_H
#define FTPWINDOW_H
#include <QDialog>
#include <QHash>
QT_BEGIN_NAMESPACE
class QDialogButtonBox;
class QFile;
class QFtp;
class QLabel;
class QLineEdit;
class QTreeWidget;
class QTreeWidgetItem;
class QProgressDialog;
class QPushButton;
class QUrlInfo;
QT_END_NAMESPACE
class FtpWindow : public QDialog
{
Q_OBJECT
public:
FtpWindow(QWidget *parent = 0);
QSize sizeHint() const;
private slots:
void connectOrDisconnect();
void downloadFile();
void cancelDownload();
void ftpCommandFinished(int commandId, bool error);
void addToList(const QUrlInfo &urlInfo);
void processItem(QTreeWidgetItem *item, int column);
void cdToParent();
void updateDataTransferProgress(qint64 readBytes,
qint64 totalBytes);
void enableDownloadButton();
private:
QLabel *ftpServerLabel;
QLineEdit *ftpServerLineEdit;
QLabel *statusLabel;
QTreeWidget *fileList;
QPushButton *cdToParentButton;
QPushButton *connectButton;
QPushButton *downloadButton;
QPushButton *quitButton;
QDialogButtonBox *buttonBox;
QProgressDialog *progressDialog;
QHash<QString, bool> isDirectory;
QString currentPath;
QFtp *ftp;
QFile *file;
};
#endif
#include <QtGui>
#include <QtNetwork>
#include "ftpwindow.h"
FtpWindow::FtpWindow(QWidget *parent)
: QDialog(parent), ftp(0)
{
ftpServerLabel = new QLabel(tr("Ftp &server:"));
ftpServerLineEdit = new QLineEdit("ftp.qt.nokia.com");
ftpServerLabel->setBuddy(ftpServerLineEdit);
statusLabel = new QLabel(tr("Please enter the name of an FTP server."));
fileList = new QTreeWidget;
fileList->setEnabled(false);
fileList->setRootIsDecorated(false);
fileList->setHeaderLabels(QStringList() << tr("Name") << tr("Size") << tr("Owner") << tr("Group") << tr("Time"));
fileList->header()->setStretchLastSection(false);
connectButton = new QPushButton(tr("Connect"));
connectButton->setDefault(true);
cdToParentButton = new QPushButton;
cdToParentButton->setIcon(QPixmap(":/images/cdtoparent.png"));
cdToParentButton->setEnabled(false);
downloadButton = new QPushButton(tr("Download"));
downloadButton->setEnabled(false);
quitButton = new QPushButton(tr("Quit"));
buttonBox = new QDialogButtonBox;
buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
progressDialog = new QProgressDialog(this);
connect(fileList, SIGNAL(itemActivated(QTreeWidgetItem *, int)),
this, SLOT(processItem(QTreeWidgetItem *, int)));
connect(fileList, SIGNAL(currentItemChanged(QTreeWidgetItem *, QTreeWidgetItem *)),
this, SLOT(enableDownloadButton()));
connect(progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
connect(connectButton, SIGNAL(clicked()), this, SLOT(connectOrDisconnect()));
connect(cdToParentButton, SIGNAL(clicked()), this, SLOT(cdToParent()));
connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
QHBoxLayout *topLayout = new QHBoxLayout;
topLayout->addWidget(ftpServerLabel);
topLayout->addWidget(ftpServerLineEdit);
topLayout->addWidget(cdToParentButton);
topLayout->addWidget(connectButton);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addLayout(topLayout);
mainLayout->addWidget(fileList);
mainLayout->addWidget(statusLabel);
mainLayout->addWidget(buttonBox);
setLayout(mainLayout);
setWindowTitle(tr("FTP"));
}
QSize FtpWindow::sizeHint() const
{
return QSize(500, 300);
}
void FtpWindow::connectOrDisconnect()
{
if (ftp) {
ftp->abort();
ftp->deleteLater();
ftp = 0;
fileList->setEnabled(false);
cdToParentButton->setEnabled(false);
downloadButton->setEnabled(false);
connectButton->setEnabled(true);
connectButton->setText(tr("Connect"));
#ifndef QT_NO_CURSOR
setCursor(Qt::ArrowCursor);
#endif
return;
}
#ifndef QT_NO_CURSOR
setCursor(Qt::WaitCursor);
#endif
ftp = new QFtp(this);
connect(ftp, SIGNAL(commandFinished(int, bool)),
this, SLOT(ftpCommandFinished(int, bool)));
connect(ftp, SIGNAL(listInfo(const QUrlInfo &)),
this, SLOT(addToList(const QUrlInfo &)));
connect(ftp, SIGNAL(dataTransferProgress(qint64, qint64)),
this, SLOT(updateDataTransferProgress(qint64, qint64)));
fileList->clear();
currentPath.clear();
isDirectory.clear();
QUrl url(ftpServerLineEdit->text());
if (!url.isValid() || url.scheme().toLower() != QLatin1String("ftp")) {
ftp->connectToHost(ftpServerLineEdit->text(), 21);
ftp->login();
} else {
ftp->connectToHost(url.host(), url.port(21));
if (!url.userName().isEmpty())
ftp->login(QUrl::fromPercentEncoding(url.userName().toLatin1()), url.password());
else
ftp->login();
if (!url.path().isEmpty())
ftp->cd(url.path());
}
fileList->setEnabled(true);
connectButton->setEnabled(false);
connectButton->setText(tr("Disconnect"));
statusLabel->setText(tr("Connecting to FTP server %1...")
.arg(ftpServerLineEdit->text()));
}
void FtpWindow::downloadFile()
{
QString fileName = fileList->currentItem()->text(0);
//
if (QFile::exists(fileName)) {
QMessageBox::information(this, tr("FTP"),
tr("There already exists a file called %1 in "
"the current directory.")
.arg(fileName));
return;
}
file = new QFile(fileName);
if (!file->open(QIODevice::WriteOnly)) {
QMessageBox::information(this, tr("FTP"),
tr("Unable to save the file %1: %2.")
.arg(fileName).arg(file->errorString()));
delete file;
return;
}
ftp->get(fileList->currentItem()->text(0), file);
progressDialog->setLabelText(tr("Downloading %1...").arg(fileName));
downloadButton->setEnabled(false);
progressDialog->exec();
}
void FtpWindow::cancelDownload()
{
ftp->abort();
}
void FtpWindow::ftpCommandFinished(int, bool error)
{
#ifndef QT_NO_CURSOR
setCursor(Qt::ArrowCursor);
#endif
if (ftp->currentCommand() == QFtp::ConnectToHost) {
if (error) {
QMessageBox::information(this, tr("FTP"),
tr("Unable to connect to the FTP server "
"at %1. Please check that the host "
"name is correct.")
.arg(ftpServerLineEdit->text()));
connectOrDisconnect();
return;
}
statusLabel->setText(tr("Logged onto %1.")
.arg(ftpServerLineEdit->text()));
fileList->setFocus();
downloadButton->setDefault(true);
connectButton->setEnabled(true);
return;
}
if (ftp->currentCommand() == QFtp::Login)
ftp->list();
if (ftp->currentCommand() == QFtp::Get) {
if (error) {
statusLabel->setText(tr("Canceled download of %1.")
.arg(file->fileName()));
file->close();
file->remove();
} else {
statusLabel->setText(tr("Downloaded %1 to current directory.")
.arg(file->fileName()));
file->close();
}
delete file;
enableDownloadButton();
progressDialog->hide();
} else if (ftp->currentCommand() == QFtp::List) {
if (isDirectory.isEmpty()) {
fileList->addTopLevelItem(new QTreeWidgetItem(QStringList() << tr("<empty>")));
fileList->setEnabled(false);
}
}
}
void FtpWindow::addToList(const QUrlInfo &urlInfo)
{
QTreeWidgetItem *item = new QTreeWidgetItem;
item->setText(0, urlInfo.name());
item->setText(1, QString::number(urlInfo.size()));
item->setText(2, urlInfo.owner());
item->setText(3, urlInfo.group());
item->setText(4, urlInfo.lastModified().toString("MMM dd yyyy"));
QPixmap pixmap(urlInfo.isDir() ? ":/images/dir.png" : ":/images/file.png");
item->setIcon(0, pixmap);
isDirectory[urlInfo.name()] = urlInfo.isDir();
fileList->addTopLevelItem(item);
if (!fileList->currentItem()) {
fileList->setCurrentItem(fileList->topLevelItem(0));
fileList->setEnabled(true);
}
}
void FtpWindow::processItem(QTreeWidgetItem *item, int /*column*/)
{
QString name = item->text(0);
if (isDirectory.value(name)) {
fileList->clear();
isDirectory.clear();
currentPath += "/" + name;
ftp->cd(name);
ftp->list();
cdToParentButton->setEnabled(true);
#ifndef QT_NO_CURSOR
setCursor(Qt::WaitCursor);
#endif
return;
}
}
void FtpWindow::cdToParent()
{
#ifndef QT_NO_CURSOR
setCursor(Qt::WaitCursor);
#endif
fileList->clear();
isDirectory.clear();
currentPath = currentPath.left(currentPath.lastIndexOf("/"));
if (currentPath.isEmpty()) {
cdToParentButton->setEnabled(false);
ftp->cd("/");
} else {
ftp->cd(currentPath);
}
ftp->list();
}
void FtpWindow::updateDataTransferProgress(qint64 readBytes,
qint64 totalBytes)
{
progressDialog->setMaximum(totalBytes);
progressDialog->setValue(readBytes);
}
void FtpWindow::enableDownloadButton()
{
QTreeWidgetItem *current = fileList->currentItem();
if (current) {
QString currentFile = current->text(0);
downloadButton->setEnabled(!isDirectory.value(currentFile));
} else {
downloadButton->setEnabled(false);
}
}
#include <QApplication>
#include "ftpwindow.h"
int main(int argc, char *argv[])
{
Q_INIT_RESOURCE(ftp);
QApplication app(argc, argv);
FtpWindow ftpWin;
ftpWin.show();
return ftpWin.exec();
}
Qt based Ftp dialog
Foundations of Qt Development\Chapter14\ftp\ftpdialog.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QFileDialog>
#include <QMessageBox>
#include "ftpdialog.h"
FtpDialog::FtpDialog() : QDialog()
{
file = 0;
ui.setupUi( this );
connect( ui.connectButton, SIGNAL(clicked()), this, SLOT(connectClicked()) );
connect( ui.disconnectButton, SIGNAL(clicked()), this, SLOT(disconnectClicked()) );
connect( ui.cdButton, SIGNAL(clicked()), this, SLOT(cdClicked()) );
connect( ui.upButton, SIGNAL(clicked()), this, SLOT(upClicked()) );
connect( ui.getButton, SIGNAL(clicked()), this, SLOT(getClicked()) );
connect( ui.dirList, SIGNAL(itemSelectionChanged()), this, SLOT(selectionChanged()) );
connect( &ftp, SIGNAL(commandFinished(int,bool)), this, SLOT(ftpFinished(int,bool)) );
connect( &ftp, SIGNAL(listInfo(QUrlInfo)), this, SLOT(ftpListInfo(QUrlInfo)) );
connect( &ftp, SIGNAL(dataTransferProgress(qint64,qint64)), this, SLOT(ftpProgress(qint64,qint64)) );
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
}
void FtpDialog::connectClicked()
{
ui.connectButton->setEnabled( false );
ftp.connectToHost( "ftp.trolltech.com" );
ui.statusLabel->setText( tr("Connecting to host...") );
}
void FtpDialog::disconnectClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.close();
}
void FtpDialog::cdClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.cd( ui.dirList->selectedItems()[0]->text() );
ui.statusLabel->setText( tr("Changing directory...") );
}
void FtpDialog::upClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.cd("..");
ui.statusLabel->setText( tr("Changing directory...") );
}
void FtpDialog::getClicked()
{
QString fileName = QFileDialog::getSaveFileName( this, tr("Get File"), ui.dirList->selectedItems()[0]->text() );
if( fileName.isEmpty() )
return;
file = new QFile( fileName, this );
if( !file->open( QIODevice::WriteOnly ) )
{
QMessageBox::warning( this, tr("Error"), tr("Failed to open file %1 for writing.").arg( fileName ) );
delete file;
file = 0;
return;
}
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.get( ui.dirList->selectedItems()[0]->text(), file );
ui.statusLabel->setText( tr("Downloading file...") );
}
void FtpDialog::ftpProgress( qint64 done, qint64 total )
{
if( total == 0 )
return;
ui.statusLabel->setText( tr("Downloading file... (%1%)").arg( QString::number( double(done)*100/double(total), "f", 1 ) ) );
}
void FtpDialog::selectionChanged()
{
if( ui.dirList->selectedItems().count() == 1 )
{
if( files.indexOf( ui.dirList->selectedItems()[0]->text() ) == -1 )
{
ui.cdButton->setEnabled( ui.disconnectButton->isEnabled() );
ui.getButton->setEnabled( false );
}
else
{
ui.cdButton->setEnabled( false );
ui.getButton->setEnabled( ui.disconnectButton->isEnabled() );
}
}
else
{
ui.cdButton->setEnabled( false );
ui.getButton->setEnabled( false );
}
}
void FtpDialog::getFileList()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ui.dirList->clear();
files.clear();
if( ftp.state() == QFtp::LoggedIn )
ftp.list();
}
void FtpDialog::ftpListInfo( QUrlInfo info )
{
ui.dirList->addItem( info.name() );
if( info.isFile() )
files << info.name();
}
void FtpDialog::ftpFinished( int request, bool error )
{
if( error )
{
switch( ftp.currentCommand() )
{
case QFtp::ConnectToHost:
QMessageBox::warning( this, tr("Error"), tr("Failed to connect to host.") );
ui.connectButton->setEnabled( true );
break;
case QFtp::Login:
QMessageBox::warning( this, tr("Error"), tr("Failed to login.") );
ui.connectButton->setEnabled( true );
break;
case QFtp::List:
QMessageBox::warning( this, tr("Error"), tr("Failed to get file list.\nClosing connection.") );
ftp.close();
break;
case QFtp::Cd:
QMessageBox::warning( this, tr("Error"), tr("Failed to change directory.") );
getFileList();
break;
case QFtp::Get:
QMessageBox::warning( this, tr("Error"), tr("Failed to get file?") );
file->close();
file->remove();
delete file;
file = 0;
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
selectionChanged();
break;
}
ui.statusLabel->setText( tr("Ready.") );
}
else
{
switch( ftp.currentCommand() )
{
case QFtp::ConnectToHost:
ftp.login();
break;
case QFtp::Login:
getFileList();
break;
case QFtp::Close:
ui.connectButton->setEnabled( true );
getFileList();
break;
case QFtp::List:
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
ui.statusLabel->setText( tr("Ready.") );
break;
case QFtp::Cd:
getFileList();
break;
case QFtp::Get:
file->close();
delete file;
file = 0;
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
selectionChanged();
ui.statusLabel->setText( tr("Ready.") );
break;
}
}
}
Foundations of Qt Development\Chapter14\ftp\ftpdialog.h
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef FTPDIALOG_H
#define FTPDIALOG_H
#include <QFtp>
#include <QDialog>
#include <QFile>
#include "ui_ftpdialog.h"
class FtpDialog : public QDialog
{
Q_OBJECT
public:
FtpDialog();
private slots:
void connectClicked();
void disconnectClicked();
void cdClicked();
void upClicked();
void getClicked();
void selectionChanged();
void ftpFinished(int,bool);
void ftpListInfo(QUrlInfo);
void ftpProgress(qint64,qint64);
private:
void getFileList();
Ui::FtpDialog ui;
QFtp ftp;
QFile *file;
QStringList files;
};
#endif // FTPDIALOG_H
Foundations of Qt Development\Chapter14\ftp\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include "ftpdialog.h"
int main( int argc, char **argv )
{
QApplication app( argc, argv );
FtpDialog dlg;
dlg.show();
return app.exec();
}